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Restoring Exchange 2010 Database

In the scenario where the Exchange database is corrupt, some users can access their mailboxes and some cannot.
1- I wonder if there is a tool that can repair the corrupt database. I believe that there is ESEUTIL, but I am not sure which switch to run it with. it could be ESEUTIL /r.
I also have read that the ESEUTIL takes forever when it comes to repair or analyze the DB. if so, is there a better tool to repair the DB?

2- I believe , instead of waisting  time repairing the DB, the fastest way that most Exchange Admins take, is to restore the Database. In this case, do they dismount the corrupt DB and restore from back up and overwrite the corrupt DB ? I am not sure what's the best practice when restoring exchange DB to replace the corrupt one.

***I know in Exchange 2010 , if we apply DAG then there should always be a passive copy of the DB, but if the Active copy is corrupt, would that impact the replication to the passive copy or the passive copy will also have corrupt data ?

Any help will be very much appreciated.

Thank you
3 Solutions
Simon Butler (Sembee)ConsultantCommented:
If some users can access their mailboxes, then rather than put their data at risk, I would create a new database and move all of the mailboxes across to that one. Get as much data as you can off the database.

Although if a database was corrupt then I would expect all users to have problems not just some. If it is just some users, then a mailbox repair might be all that is required.

If you want to go for any repair tool in order to recover your corrupted mailbox

You can go for the tool referred  by Ahmed or try out this tool also http://www.exchangeserverrepair.net/
jskfanAuthor Commented:
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